another helpful post from asian_asshole
to the original thread creator, handbrake is great for what you're doing. best part is that it's free too. you can download it at http://handbrake.fr/
after you've downloaded it and you're ready to rip a dvd, put the dvd in, quit dvd player (which will most likely automatically open and start the movie), open handbrake, select what 'volume' you want to copy (in this case the dvd mounted on your desktop), and don't select the audio ts or video ts folder singularly, just select the actual movie and hit open.
once you select the dvd, handbrake will scan it real quick to find the main feature. if you're going for a certain level of quality you can hit the button in the upper right hand corner that says 'toggle presets'. a window will open and close and you can select which preset you'd like to use, i'd suggest the quicktime preset if you're just watching it on your computer, but there are other presets for the iphone, AppleTV, lossless quality, etc.
once you've chosen your preset hit the 'start' button and you're off and running. sounds harder than it actually is too. i've been using it for a couple years now and haven't really found anything better for the price, features, and ease of use. you'll probably find it an ease to use as well.